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Phobos
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Introduction References & Edit History Related Topics
Images & Videos
View Phobos's rotation from the assembled still photographs captured by the Mars Express orbiter
Phobos, the inner and larger of the two moons of Mars, in a composite of photographs taken by the Viking 1 orbiter in October 1978 from a distance of about 600 km (370 miles). The most prominent feature is the impact crater Stickney, which is almost half as wide as the moon itself. Also visible are linear grooves that appear to be related to Stickney and chains of small craters.
Mars's moons explained
Phobos Gaspra, Deimos, and Phobos compared Mars: moons Phobos and Deimos Interior of the crater Stickney on Phobos. The light and dark streaks indicate that the satellite is composed of several different materials. This image was taken by the Mars Global Surveyor spacecraft.
Quizzes
View of the Andromeda Galaxy (Messier 31, M31).
Astronomy and Space Quiz
The orbits of the planets and other elements of the solar system, including asteroids, Kuiper belt, Oort cloud, comet
Space Odyssey
Saturn. Saturn and its rings. Second largest planet of the solar system. Space Art
Planets and the Earth’s Moon
Nicolaus Copernicus. Nicolas Copernicus (1473-1543) Polish astronomer. In 1543 he published, forward proof of a Heliocentric (sun centered) universe. Coloured stipple engraving published London 1802. De revolutionibus orbium coelestium libri vi.
All About Astronomy
Buzz Aldrin. Apollo 11. Apollo 11 astronaut Edwin Aldrin, photographed July 20, 1969, during the first manned mission to the Moon's surface. Reflected in Aldrin's faceplate is the Lunar Module and astronaut Neil Armstrong, who took the picture.
Can You Match The Moon To Its Planet? Quiz
Related Questions
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Mars rover. Mars Pathfinder. NASA. Sojourner.
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Solar system illustration. (Sun; planets)
A Model of the Cosmos
Background: abstract bubble planets with clouds. astrology, astronomy, atomosphere, big bang, bubbles, fantasy, future, galaxy, universe, stars
9 Ghostly Planets
Solar system illustration. (planets; sun)
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Illustration for Demystified "How Dangerous is Quicksand"
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Currency. Money. Cash. Dollars. Bills. Pile of ten, twenty, fifty, and hundred dollar bills.
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King Cobra snake in Malaysia. (reptile)
9 of the World’s Deadliest Snakes
Cheetah (Acinonyx jubatus) standing on rock, side view, Masai Mara National Reserve, Kenya
The Fastest Animals on Earth
July, 2006, Launch of Space Shuttle Discovery STS-121. See attached for full caption information.
Will Light-Speed Space Travel Ever Be Possible?
Fish. Lionfish. Lion-fish. Turkey fish. Fire-fish. Red lionfish. Pterois volitans. Venomous fin spines. Coral reefs. Underwater. Ocean. Red lionfish swims by seaweed.
10 of the World’s Most Dangerous Fish
Titanic infographic. The 30th anniversary of its discovery is September 1, 2015. SPOTLIGHT VERSION.
Timeline of the Titanic’s Final Hours

Phobos: Media

moon of Mars
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Videos

View Phobos's rotation from the assembled still photographs captured by the Mars Express orbiter
Video of Phobos's rotation as assembled from still photographs taken by the European...
Video: Mars Express, ESA
Mars's moons explained
An overview of Phobos and Deimos, the moons of Mars.
Video: © Open University (A Britannica Publishing Partner)

Images

Phobos, the inner and larger of the two moons of Mars, in a composite of photographs...
NASA/NSSDC
Phobos
A portion of the Martian moon Phobos, imaged by the Mars Global Surveyor spacecraft...
Photo NASA/JPL/Caltech (NASA photo # PIA01333)
Gaspra, Deimos, and Phobos compared
Photo montage showing Gaspra (top) compared with Deimos (lower left) and Phobos,...
JPL/NASA
Mars: moons Phobos and Deimos
The Martian moons, Phobos (left) and Deimos (right), photographed by the Viking orbiters....
National Aeronautics and Space Administration/Malin Space Science Systems
Interior of the crater Stickney on Phobos. The light and dark streaks indicate that...
Photo NASA/JPL/Caltech (NASA photo # PIA01335)